Gas-generating apparatus



(No Model.) 2 Sheets-Sheet 1. A. O. GRANGER.

GAS GENERATING APPARATUS.

No. 311,484. Patented Peb. 8,1885.

(No Model.) 2 Sheets-Sheet 2.

0. GRANGER.

GAS GENERATING APPARATUS.

,No. 311,484. Patented Feb. 3, 1885.

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ARTHUR Q. GRANGER, OF PHILADELPHIA, PENNSYLVANIA.

GAS GENERATiNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 311,4r84z, datedFebruary 3, 1885.

(No model.)

To ctZZ whom it may concern.-

Be it'known that I, ARTHUR O. GRANGER, of the city of Philadelphia,county of Philadelphia and State of Pennsylvania, have invented anImprovement in Gas-Generating Apparatus, of which the following is aspecification.

My invention has reference to apparatus for manufacturing illuminatingor heating gas; and it consists more specifically in certainimprovementsin the generator, fully set forth in the following specification, andshown in the accon'ipanying drawings, which form a part thereof.

Heretofore water-gas has been made in comparatively small generators orgasogenes, their area being limited by the ability of the grate tosupport the weight of the bed of coal.

The object of my improvement is to so construet a generator as tocontain many times the quantity of coal ordinarily found practicable,and so produce, with but little extra labor, a very large increase inthe volume of gas in a given time.

In the drawings, Figure 1 is a sectional elevation of my improvedgenerator on line 00 90. Fig. 2 is a sectional plan view of same on line9 y, looking upward. Fig. 3 is also a sectional plan of same on line .2.2, looking down; and Fig. 4 is an elevation showing a full gasworks.

A. is the generator. B is the superheater; and D, the seal or washer,the two latter of which may be constructed in any of the well knownways.

The generatorA may be made, say, thirteen feet internal diameter, andhave vertical orslightly conical walls, the diameter being greatest atthe bottom. The ash-pit M below the grate-bars E is divided by afire-brick wall, D, having pressure-equalizing apertures K through it,so that the air and steam may circulate between the two compartments ofsaid ash-pit if there should be any difference in pressure orresistanceoffered to the passage of air or steam by the bed of coal. The innerends of the grate-bars E rest on the wall D, and the outer ends rest onbeams or bars E, which are supported by iron posts F in the center andby the lining-wall at their ends.

In order to clean the fire, I provide two sets of double doors, S,similar to those patented to myself and Collins, May 1, 1883, onopposite sides of the generator and parallel to the wallD. These fourdoors S,on each side,when open, swing upon hinges S and expose theentire width of grate, as seen in Fig. 3, and leave it exposed onopposite sides of the generator, making a perfect cleaning possible.

The roof or dome of the generator is made of fire-brick, and is made ofa series of three groined arches. The arches O are first built and thenthe curved parts G built in. This dome is pierced with threecoaling-openings, A, having gas-tight lids, and three or more cleaningor stoking holes, 1%, also covered with gas-tight lids or covers.

A is the gas-outlet, and connects with the superheater B. It opens frombetween two of the arches as in thecase of the eoalingopenings A. Air isadmitted at four places below the grate-bars by nozzles G, which openfrom a central pipe, G, and the blast to all nozzles may be regulated bya single valve, G Steam is admitted under the grates through twoopenings, H, a single valve, I, controlling the supply to tea openings.

In order to utilize heat that is now usually wasted and to superheat thesteam, I place a coil of pipe, 0, back of the fire-brick lining. Thesteam from the boiler enters the said coil at the top part, which may besupplied with a valve, N, and is led outside the generatorcase by bentpipe 0, from which the two nozzles P P spring and enter openings II, thevalve I being loeatedin said bend O, as shown in Fig. 1.

I am aware of the patents to Springer, No. 263,612, of 1882, and Stantonand Hutchinson, No. 208,666, of 1878, and claim nothing therein setforth or shown.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a gas-generator, a grate of large area and unobstructed fromabove, in combination with the ash-pit, a dividing-wall having one ormore open passages through the same and supporting the said gratediametrically across its center, air and steam pipes opening into saiddivided ash-pit and on each side of said dividing-wall, andclcaning-doors arranged upon diametrically-opposite sides of the grateat right angles to the dividing-wall, substantially as and for thepurpose specified.

. its center, air and steam pipes opening into said divided ash-pit andon each side of said dividing-wall, and cleaningdoors arranged upondiametrically-opposite sides of the grate and at right angles todividing-wall, and of sufficient height to expose the space above thegrate as well as the ash-pit, substantially as and forthepurposespecified.

3. In a gas-generator, a grate of large area and unobstructed fromabove, in combination with an ash-pit, a dividing-wall having one ormore perforations and supporting said grate diametrically across itscenter, posts F, and supporting-bars E, substantially as and for thepurpose specified. y

4. A gas-generator of large diameter provided with cleaning-doorsconsisting of four doors, S, hinged, as shown, to form a set on a levelwith the grate and ash-pits and on opposite sides thereof, the saiddoors when open exposing the entire width of grate and ashpit or fullinternal diameter of the generator, substantially as and for the purposespecified.

5. A gas-generator of large diameter provided with cleaning-doors on alevel with the grate and ash-pits and on opposite sides thereof, incombination with grate E, supportingbars E, dividing-wall D, andblast-pipes, substantially as and for the purpose specified.

6. Agas-generator of large diameter provided with a groined arch dome orroof consisting of arches O C, and coaling and stoking holes throughsaid arches 0 between the arches O, substantially as and for the purposespecifled;

9. A gas-generator of large diameter provided with a groined arch domeor roof consisting of arches G O, coaling and stoking holes, and exitgas-flue through said arches 0 between the arches O, substantially asand for the purpose specified.

10. In a gas-generator, the combination of the grate, ash-pit,dividing-wall for said ashpit, a single blast-pipe, G, provided with avalve, G and a series of blast-nozzles, G, also opening from said blastpipe,arranged to face the grate-bars, and substantially equidistant fromeach other, substantially as and for the purposespecified.

In testimony of which invention I hereunto set my hand.

ARTHUR O. GRANGER.

